Portfolio comparison
John L. Mason vs Sperry Rand Corp
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Top Patents1 enriched
US 22186· 1858
John Mason's 1858 Patent for the Mason Jar Lid
Activity by Decade
1850s1
Top Patents1 enriched
US 3120606· 1964
How the ENIAC Computer Processes Data Using Electronic Pulses
Activity by Decade
1960s1
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